*A quest was launched during 2012 to identify a correlation between the affirmation of H.P.B. in her S.D. 2.69 that the age of humanity has more than eighteen million years (18,618,725 years up to Kali-Yuga 4986, or 1884-1885 C.E.). Many articles were published on this blog, with all details of calculations according to the old Indian Tradition, more specifically from the Tirukkanda Panchanga which can be can clearly be traced to the Sūrya-siddhānta.*

*A
copy of the **Sūrya-siddhānta
**was uploaded on this site.
Chapter one is giving the basic calculations for the cycles (yugas) :*

*We
start with the classical Maha-Yuga, made of the four yugas plus the
sandhyas and sandhyansas, with a duration of 4,320,000 human years.*

*Then, we have the duration of a Manvantara, with 71 Maha-Yugas, plus one Krita-Yuga :*

*Then,
we have the definition of the Kalpa, made of fourteen manvantaras,
plus the fifteenth sandhi (Krita-Yuga) *

*Then, the definition of the Day of Brahma, made of one hundred Kalpas.*

*We
learn here that the present Kalpa is the first in the remaining half
of this Brahma age.*

*Then
we have the calculation to reach our current date :*

*The
two next verses are the ones of interest for the search for the 18
million years :*

*Since the end of the Krita Yuga, 47,400 years of the Gods = 47,400 x 360 = 17,064,000 human years have elapsed, to which we add the Krita Yuga :*

*17,064,000
+ 1,728,000 = ***18,792,000
human years**

*We
still have a discrepancy of 18,792,000 – **18,618,725
**=
**173,275
years, but the order of magnitude is very close by.*